Calculate the half life of the first order reaction from their rate constants given as:

Explanation

`(a)t_(1/2)=200s^-1`
Rate constant,`K=0.693/(t_1/2)=0.693/(200S)=3.46xx10^-3s^-1`
(b)`t_(1/2)=2min
`K=0.693/(2min)=3.46xx10^-1min.`